How do I find the intersections for the equations, $y = 4-x^2$ and $y = 2^x + 1$ without drawing or using a graphing calculator?
I got this far:
$x^2 + 2^x - 3 = 0$
Tried using some calculating programs but they could not compute the answer, and I could only find the x and y values by using a graph calculator. How can I find the x and y values without one?